[dijit]

You can always distribute, but you can't submit to the mac app store.

I used to run a multitude of OSX (xcode developed) applications for beta testing, and while not signed, they were indeed runable.

[gambiting]

I think you two are talking about different things. You could always distribute to OSX devices. However, now is the first time ever when you can run your app on an iOS device without a membership certificate from Apple. This is very good news.